FATSAC 1" Barbed In-Line Check Valve w/O-Rings f/Auto Ballast System Ships within United States Free shipping with Fishbrain Pro. Sign up here. Share Loading Facebook Like button... FATSAC 1" Barbed In-Line Check Valve w/O-Rings f/Auto Ballast System Ships within United States Free shipping with Fishbrain Pro. Sign up here. Share Loading Facebook Like button...